Keratoconus: Symptoms, Causes and Modern Treatment Options in Upper Assam

Keratoconus: Symptoms, Causes and Modern Treatment Options in Upper Assam

Keratoconus is an eye condition in which the cornea, the clear dome at the front of the eye, slowly thins and bulges outwards into a cone shape. This distorts the way light enters the eye, so vision becomes blurred and warped. It often starts in the teens or twenties, which is why it is easy to mistake for an ordinary change in glasses number.

The good news is that keratoconus can be monitored and treated. Glasses or specially fitted lenses can improve vision, corneal cross-linking can help stop the cornea from getting worse, and surgery is kept for more advanced cases. The key is to find it early. This guide explains the symptoms, causes, tests and treatment options in plain language, and what to do if you are in Dibrugarh or elsewhere in Upper Assam.

What Is Keratoconus?

The cornea is the transparent front surface of the eye. It does most of the eye’s focusing work, and a healthy cornea has a smooth, rounded shape. In keratoconus, the cornea becomes weaker and thinner, and the thinned area bulges forward like a cone. The shape becomes irregular, so light is no longer focused to a single sharp point.

Keratoconus usually affects both eyes, although often unequally. It tends to begin in the late teens to the early thirties and can progress slowly over 10 to 20 years. Some people stay mild for life, while others progress and need more active treatment. This is why it is not a one-size-fits-all condition.

What Causes Keratoconus?

The exact cause is not known. Doctors believe that a mix of genes and environmental factors is involved. Some points are well recognised:

•      Family history. About 1 in 10 people with keratoconus has a parent who also has it.

•      Eye rubbing. Vigorous or habitual eye rubbing is linked with keratoconus. It may be a habit or may be driven by itching.

•      Allergies. Eye allergies, hay fever and asthma are associated with the condition, partly because itchy eyes lead to rubbing.

•      Certain medical conditions. These include Marfan syndrome, Ehlers-Danlos syndrome, Down syndrome and retinitis pigmentosa.

An Indian hospital-based study reported by LV Prasad Eye Institute found it more commonly in men in its records, but the researcher cautioned that the reasons are not known and that differences in who reaches hospital may play a part.

What Are the Symptoms of Keratoconus?

Early keratoconus can be subtle, and early symptoms often look like common refractive errors. Look out for:

•      Mild blurring, or lines that look slightly wavy or distorted

•      Glasses numbers that keep changing, especially astigmatism

•      Sensitivity to bright light and glare, and difficulty with night driving

•      Ghosting or double vision in one eye, and halos around lights

•      Eye irritation, redness or the urge to rub the eyes

As it progresses, vision becomes more blurred and distorted, glasses stop giving clear sight, and contact lenses may become hard to wear. Keratoconus itself is usually painless. Pain, redness and a sudden drop in vision are not typical of ordinary progression, so please have them checked promptly.

Who Is at Higher Risk, and Who Should Get Checked?

Consider an eye check, with a cornea assessment if advised, when:

•      You are a teenager or young adult whose glasses keep changing or never quite give clear vision

•      Someone in your family has keratoconus

•      You rub your eyes often, or have long-standing eye allergies

•      You have a related condition such as Marfan, Ehlers-Danlos or Down syndrome

•      You are thinking about laser vision correction. A corneal assessment is an important part of deciding whether it is suitable

Having a risk factor does not mean you will develop keratoconus, and it can occur in people with none of them.

How Is Keratoconus Diagnosed?

Keratoconus is diagnosed through an eye examination, often during a routine check. Your doctor decides which tests are needed. They may include:

•      A detailed history and vision check. Including how often your glasses have changed.

•      Slit-lamp examination. A microscope that lets the doctor look closely at the cornea.

•      Corneal curvature measurement (keratometry). Shows how steep the cornea is.

•      Corneal topography or tomography. A computer map of the front, and in tomography also the back, surface of the cornea. It can show a cone-shaped steepening before it is visible to the eye, and it is used to track change over time.

•      Corneal thickness measurement (pachymetry). A thin cornea is typical of keratoconus and also affects which treatments are safe.

Because keratoconus can change over time, tests are often repeated to see whether it is progressing. That decides when treatment is needed. 

What Are the Modern Treatment Options for Keratoconus?

Treatment depends on how advanced the keratoconus is, whether it is getting worse, and the condition of your cornea. Your ophthalmologist will advise on the plan; this article cannot choose a treatment for any individual. The main approaches are:

Glasses and soft contact lenses

In the early stages, glasses or soft lenses can give good vision. As the cornea becomes more irregular, they may stop being enough.

Rigid gas-permeable and scleral lenses

Rigid gas-permeable (RGP) lenses and larger scleral lenses create a smooth surface over an irregular cornea and often give much sharper vision than glasses. They need a careful specialist fitting and good lens hygiene. They improve vision but do not, on their own, stop the cornea from changing. Our contact lens clinic page lists RGP and scleral lenses for irregular corneas.

Corneal cross-linking (CXL)

Cross-linking is designed to strengthen the cornea. Riboflavin (vitamin B2) drops are applied to the cornea, which is then exposed to ultraviolet light. This increases the links between collagen fibres and can help stop keratoconus from getting worse. It aims to stabilise the cornea rather than reverse changes that have already happened, so vision is not usually restored to normal by CXL alone. It is generally considered when keratoconus is progressing, and glasses or lenses are still usually needed afterwards. Like any procedure, it has risks, which your doctor will explain.

Corneal implant rings (Intacs)

In some moderate cases, tiny curved segments are placed in the cornea to flatten and regularise its shape. Whether this suits you depends on your corneal measurements.

Corneal transplant

A transplant is kept for advanced keratoconus, such as when scarring is present or lenses can no longer give useful vision. In deep anterior lamellar keratoplasty (DALK) the front layers are replaced and your own inner layer is kept. In penetrating keratoplasty (PK) the full thickness of the cornea is replaced. The choice depends on the condition of the cornea. A transplant depends on donor tissue from an eye bank.

Outcomes vary from person to person. No treatment can promise a particular result, and some people need more than one approach over time. The earlier keratoconus is found, the more options there usually are.

Can Keratoconus Be Prevented?

Keratoconus cannot be reliably prevented, and no supplement or lifestyle change can promise to stop it. You can, however, lower the chance of it worsening and catch it early:

•      Try not to rub your eyes. If they itch, ask your doctor about treating the allergy instead

•      Have an eye and cornea check if your glasses keep changing or if there is a family history

•      Follow your doctor’s review schedule so that progression is noticed in time

•      If you wear contact lenses, follow hygiene advice and seek same-day care for pain, redness or light sensitivity

How Often Should You Get Checked?

There is no single schedule. How often you need to be seen depends on your age, how advanced the keratoconus is, and whether it is changing. People whose keratoconus is progressing, especially younger people, are usually reviewed more closely. It can continue to change into the 30s and sometimes 40s, so ongoing monitoring matters. Your ophthalmologist will tell you the right interval.

Because keratoconus can run in families, your doctor may suggest checking close relatives, particularly if they have blurred vision or frequently changing glasses.

Keratoconus Care in Dibrugarh and Upper Assam

Keratoconus can affect people anywhere, and living in Upper Assam does not by itself decide your risk. Because it often starts in young people and looks like a simple glasses problem, it can go unrecognised for years, and treatments such as cross-linking work best when the cornea is still stable enough to be protected.

Drishti Netralaya’s cornea page states that it treats keratoconus, with initial consultations at its Dhemaji and Machkhowa centres and treatment and surgery at the main hospital in Dibrugarh. It describes glasses or rigid lenses for milder disease, cross-linking for progressing disease, and corneal transplant (PK and DALK) for advanced disease, supported by a partnership for donor tissue.

Please note that the website does not describe the diagnostic tests (such as corneal topography) used for keratoconus.

To ask about an examination, call +91 6901274500 (also on WhatsApp) or use the contact page. If you are considering vision correction, our LASIK and refractive surgery page explains that a corneal assessment comes first.

Frequently Asked Questions

What is keratoconus?

Keratoconus is a condition in which the cornea, the clear front of the eye, gradually thins and bulges into a cone shape. This distorts vision and often makes glasses changes frequent.

At what age does keratoconus start?

It usually begins in the teens or twenties and can continue to change into the 30s and sometimes 40s. It can occasionally start earlier or later.

Is keratoconus painful?

Usually not. Keratoconus itself is typically painless. Sudden pain, redness, light sensitivity or a sudden drop in vision need prompt examination, as they can mean an infection or a sudden corneal swelling.

Can keratoconus be cured?

There is no cure that restores a normal cornea shape, but it can be managed. Treatments aim to stabilise the cornea and improve vision.

Can keratoconus be stopped from getting worse?

Corneal cross-linking is designed to help halt progression, and your doctor can tell you whether it suits you. Monitoring is needed because keratoconus can change over many years.

Does cross-linking reverse keratoconus?

Usually not. It aims to stop further change rather than undo existing change, so lenses or glasses are often still needed afterwards.

Can glasses correct keratoconus?

Glasses can help in the early stages. As the cornea becomes more irregular, rigid or scleral lenses often give clearer vision.

Is keratoconus genetic, and does eye rubbing cause it?

Genes play a role, and about 1 in 10 people with keratoconus has an affected parent. Eye rubbing is linked with it, so avoiding rubbing is sensible, although the cause is not fully understood.

Can I have LASIK if I have keratoconus?

Standard LASIK is generally not considered suitable for keratoconus because it thins the cornea. A corneal assessment is needed before any laser vision correction, and your doctor can explain the options.

Do I need a corneal transplant?

Most people with keratoconus do not. A transplant is considered mainly in advanced cases, for example with scarring or when lenses can no longer give useful vision.

Can keratoconus cause blindness?

Advanced keratoconus can scar the cornea and seriously reduce vision, and some people need a transplant. With monitoring and timely treatment, many people keep useful vision.

Conclusion: Get Your Eyes Checked

Keratoconus often starts quietly, with blurred vision, light sensitivity and glasses that keep changing. It can be monitored and treated, and the earlier it is recognised, the more options you usually have. A check cannot promise that no vision will be lost, but it gives the best chance of finding a problem while treatment can still help.